Reactor training
Spring Reactor hands-on training (3 days)
Day 1: Introduction
- What is reactive programming
- Crash course to
CompletableFuture and thread pools
- Introducing Reactor
- How to create a stream?
just(), generate(), create(), fromCallable(), fromStream()
- Laziness
- Basic operators
map(), filter(), filterWhen() flatMap(), handle(), take(), skip()doOn*() operatorswindow(), buffer(), distinct()cast(), ofType(), index()timestamp(), elapsed()zip(), merge()
- Error handling
timeout(), retry*(), retryBackoff()onError*()
- Blocking and reactive, back and forth
- Concurrency with blocking code and thread pools
subscribeOn(), parallel()
- Unit testing
Day 2: Reactor advanced
- Concurrency with non-blocking code
- Advanced error handling and retries
transform() vs. transformDeferred()- Advanced operators
groupBy(), window()reduce(), scan()expand*()
- Backpressure
Processor API
- Advanced testing with virtual time
Context- Speculative execution example
- RxJava interoperability
Day 3: Practical
- Comparison to blocking and asynchronous servlets
- Refactoring existing application to Reactor
- Spring Boot
- Reactive database access
- Reactive controllers
WebFilter- Global error handling
- Payload validation
- Web sockets
- Streaming data in and out
- Troubleshooting and debugging
checkpoint(), onOperatorDebug(), doOn*()
Reference materials
- Reactor 3 Reference Guide
- Web on Reactive Stack in Spring Framework Documentation
- The "Spring WebFlux Framework" in Spring Boot Reference Guide
